wenzel



2 Sheets-Sheet; 1.

(No Model.)

H. J. WENZEL.

WATCHMANS TIME DETECTOR.

Patented May 1,1883.

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(No Mudel.) 2 Sheets-Sheet, 2.

H. J. WENZEL.

JVE

UNITED STATES PATENT OrEicE.

HERMANN J. TVENZEL, OF SAN FRANCISCO, CALIFORNIA.

WATCHMANS TlME-DETECTO R.

SPECIFICATION forming part of Letters Patent No. 276,740, dated May 1, 1883.

(No model.)

To all whom it may concern:

Be it known that I, HERMANN J. WENZEL, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in \Vatchmens Time- Detectors, of which the following is a specification.

My invention relates to improvements in w atchmens time-detectors in which the recording mechanism is connected with the ordinary running-gear ot a clock; and the objectof my improvement is to so connect with such clocks a recording or registering device that the hour at which the record is made will be indicated by a puncture made on a paper dial contained within the clockcase. I attain this object by the mechanism illustrated in the accompanying drawings, in which Figure 1 represents the ordinary clock mechanism. Fig. 2 is a front elevation, representing the recording mechanism, the indicating card or disk being represented by dotted lines; and

Fig. 3 is a top view of the same. Fig. 4. is a detail view. Fig. 5 is afront view, illustrating a modification; and Fig. 6 is a top view of the same. Fig. 7 shows a segment of the recording disk or card. Fig.8 is a sectional view of I the device for securing the paper dial upon its arbor or shaft.

Similarletters refer to like parts throughout the several views.

A represents the post or arbor which carries the min ute-hand ofthe clock, and havingkeyed upon it a cam-wheel, B, which operates upon a pin or lug projecting from the pivoted lever O. This lever O is provided at one end with a balance-weight, D, and to the opposite end is connected the rod E, which extends down to and is connected with the recording mechanism placed in the lower compartment of the clock-case.

The recording mechanism consists of a vertical post, F, stepped in a hearing, G, and pivoted at its upper end in a bracket, H. Upon this post there is loosely fitted the carrier or sleeve 1, to which is attached the arm J, extending out at right angles toward the center of the clock-case. The connecting-rod E is attached to this arm, which it gradually raises as the long arm of the lever C is raised up by the rotation of the cam B. The outer end of I the arm J carries a needle-point, K, which operates against the recording-dial through the hole L in the free end of the Hat spring M, brazed or otherwise secured upon the arm .l'. As the cam B revolves the sleeve 1 is grad ually raised to the required elevation or until the highest point or toe of the cam clears the lug on the lever C. When this point has been reached the lever and its connected parts will immediately resume their original position and the lower edge of the sleeve I will strike upon the outer end of the lever 0, which has pivoted to its outer end the pawl P, which engages with the teeth of the ratchet wheel Q, keyed upon the shaft 1%, which latter is mounted in suitable bearings. A secondary pawl, S, is also provided, which is actuated by a spring, to keep it in continual contact with the ratchetwheel Q and prevent the wheel from slipping or moving more than one tooth at a time.

Upon the outer end of the shalt 1%, I key a flat disk, T, which serves as a bearing against which the recording paper dial U may be clamped by means of thespring clampiugplate V. Two or more short needle-points or pins, W W, project from the disk T and enter the paper dial and assist in holding it in itsradial position upon the axle R.

Projecting inwardly from the vertical post F, and at right angles thereto, and also at right angles to the arm J on the sliding sleeve I, extends the arm or red X, the outer end of which enters a hole or slot in the push-rod Y. This rod passes through the side casing of the clocktrame, and its inner end is slotted, and has a bearing on a set-screw, as seen at Fig. 2. A stud or pin projects laterally from the push-rod, and is borne against by a flat spring Z, which throws the push-rod back to its original position after it has been pushed inward.

The recording-disk is made of paper, and is provided with a series ot'flgures or dots, which indicate the hours or half-hours, arranged in radial lines. Another series of iigurcs are arranged upon the outer edge of the dial, and serve to indicate the days of the month, as is seen in detail in Fig. 7.

The door of the clock-case is provided upon its inner side with a batten or cleat, A, having a vertical groove or slot B, cut therein. This cleat presses against the paper disk U, but not so tightly as to bind it.

For the purpose of securing the paper disk U upon its rotating shaft or arbor I prefer to use the device illustrated in Fig. 8, and which consists of a plate, a, attached to the disk T by hinges b, and having a tongue, 0, which projects through a slot in the disk T, and is pressed upon by a spring, (I.

In practice the paper disk or dial U is passed over the hinge-plate, which is then turned down flat upon the disk T, and the flat spring d, attached to the rear face of the disk T by pressing upon the tongue 0, serves to keep the plate in position. A perforation made in the outer end of the hinged plate re ceives the point of the pin W, which passes through the paper, and thus the recording-disk is firmly held to place and all side-play isprevented.

The operation of my improved device will be as follows, to wit: The clock-work being set in motion, the revolution of the cam on the arbor of the minutehand will by means of the lever c and connecting-rod E cause the sleeve I and arm J to be gradually and steadily elevated at a uniform rate of speed upon the vertical pivotal post F. While being so elevated the watchman at stated intervals of time operates the push-rod Y, which causes the vertical post F to be partially rotated upon its axis, carrying with it the sleeve I and arm J, the needle-point of which enters the paper disk or dial U, and makes a puncture there in, the said paper disk being braced or held up to the needle-point by the eleatA while the point of the needle enters the slot B. As the operator releases the push rod the ilat spring Z will force the lOll back to its former position, and thereby cause a reverse movement of the vertical post F, and cause the arm J to swing back and the needle-point to be withdrawn from thepaper. As the needle is being withdrawn the flat spring M, which in its normal position stands out some distance from the arm J, presses against the surface of the paper disk until the needle-point has been completely withdrawn from the paper, and thus all sticking or binding of the needle within the orifice it has made is prevented. Fach puncture will be a short distance removed from the one preceding it, and all will be on a radial line extending from the spindle It. hen the length of time during which the watchman is supposed to be on duty has elapsed the point of the cam B will have passed from beneath the stud on the lever O and permit it to drop down, and cause, by

'aaeprae means of the falling sleeve I, levers, pawls', and ratchet-wheel, a partial revolution of the paper disk and present a new series of figures or surface of paper to be operated upon by the puncturing-needle.

In the modification shown in Figs. 5 and (i the operation will be the same. The push-rod is dispensed with, however, and a. vibrating plate, G, is substituted therefor, and which may be operated by either of the cords or wires D 1).

Having thus described my invention, what I claim, and desire to secure by Letters laten t, 1s-

1. In a watehmans time-detector, the combination, with a clock-movement having an arbor, A, provided with a cam, 13, of thelever 0, rod E, and sleeve I, operating upon apost, F, and against the lever 0, having a pawl,P, which operates the ratchet-wheel Q, keyed upon the shaftR of the revolving recording-disk, substantially as shown and described.

2. In a watchmans time-detector, the combination, witha clock-movement having an arbor, A, and cam B, of the lever O, rod E, sleeve I, having an arm, J, provided with. a pricking-point, K, adapted to operate against a paper recording-disk, U, and vertical pivotal post F, having an arm, X, engaging-with the spring push-rod Y, substantially as shown and described.

3. In a watchmans time-detector, the combination, with the paper dial or recording-disk U, suitably mounted upon a spindle intermittently rotated by means of suitable ratchets,

pawls, and levers, of the channeled cleat A and the arm J, provided with a pricking-point, K,'and presser-spring M, said arm J sliding upon the vertical pivotal post F, operated by the rod or arm X and spring push-rod Y, substantially as shown and described.

t. In a watchmans time-detector, the means herein shown and described for clamping the rotating recording disk or dial to place, consisting of the disk T, secured upon the shaft It, and hinge-plate at, having a tongue, 0, and held in its secured position by a flat spring, 11, substantially in the manner and for the purpose set forth.

In testimony that I. claim the foregoing I have hereunto set my hand and seal this 25th day of September, 1882.

HERMANN J. WENDEL.

Witnesses:

GHAs. E. KELLY, WILMER BRADFORD. 

